Cross-site scripting in Apple Safari
Priority LOW 20CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 15 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-79.
Summary
A logic issue was addressed with improved checks. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4. Visiting a maliciously crafted website may lead to a cross-site scripting attack.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00287 21st percentileScored 2026-11-07
Fix Partial Safari (Apple): 26.4iOS and iPadOS (Apple): 18.7.7, 26.4+1 more productRed Hat: 11 advisoriesRed Hat: 15 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apple | Safari | before 26.4 | 26.4 | Patch available | CNA |
| Apple | iOS and iPadOS | before 18.7.7; before 26.4 | 18.7.7, 26.4 | Patch available | CNA |
| Apple | macOS | before 26.4 | 26.4 | Patch available | CNA |
- Safari VendorApple Affected before 26.4 Fixed in 26.4 Patch available CNA
- iOS and iPadOS VendorApple Affected before 18.7.7; before 26.4 Fixed in 18.7.7, 26.4 Patch available CNA
- macOS VendorApple Affected before 26.4 Fixed in 26.4 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 26.4 | Vulnerable | Apple |
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 18.7.7; 26.0 to before 26.4 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 18.7.7; 26.0 to before 26.4 | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | before 26.4 | Vulnerable | Apple |
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 26.4 Vulnerable ·Apple
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 18.7.7; 26.0 to before 26.4 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 18.7.7; 26.0 to before 26.4 Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 26.4 Vulnerable ·Apple
Remediation
- Fix · CNA Safari (Apple) Fixed in 26.4
- Fix · CNA iOS and iPadOS (Apple) Fixed in 18.7.7, 26.4
- Fix · CNA macOS (Apple) Fixed in 26.4
Red Hat 11 advisories
- RHSA-2026:22136 Released 2026-06-01 · Red Hat rating Importantwebkitgtk4 security update
- Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.52.3-1.el7_9, webkitgtk4-devel-2.52.3-1.el7_9, webkitgtk4-jsc-2.52.3-1.el7_9 +1
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.52.3-1.el7_9, webkitgtk4-doc-2.52.3-1.el7_9, webkitgtk4-jsc-devel-2.52.3-1.el7_9
- RHSA-2026:19535 Released 2026-05-20 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) webkit2gtk3-2.52.3-1.el9_0, webkit2gtk3-devel-2.52.3-1.el9_0, webkit2gtk3-jsc-2.52.3-1.el9_0 +1
- RHSA-2026:19206 Released 2026-05-19 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.52.3-1.el9_8, webkit2gtk3-devel-2.52.3-1.el9_8, webkit2gtk3-jsc-2.52.3-1.el9_8 +1
Show 8 more Red Hat advisories
- RHSA-2026:16695 Released 2026-05-13 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) webkit2gtk3-2.52.3-1.el9_2, webkit2gtk3-devel-2.52.3-1.el9_2, webkit2gtk3-jsc-2.52.3-1.el9_2 +1
- RHSA-2026:16056 Released 2026-05-11 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3-2.52.3-1.el8_4, webkit2gtk3-devel-2.52.3-1.el8_4, webkit2gtk3-jsc-2.52.3-1.el8_4 +1
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) webkit2gtk3-2.52.3-1.el8_4, webkit2gtk3-devel-2.52.3-1.el8_4, webkit2gtk3-jsc-2.52.3-1.el8_4 +1
- RHSA-2026:14659 Released 2026-05-07 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream EUS (v.9.4) webkit2gtk3-2.52.3-1.el9_4, webkit2gtk3-devel-2.52.3-1.el9_4, webkit2gtk3-jsc-2.52.3-1.el9_4 +1
- RHSA-2026:13845 Released 2026-05-05 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3-2.52.3-1.el8_6, webkit2gtk3-devel-2.52.3-1.el8_6, webkit2gtk3-jsc-2.52.3-1.el8_6 +1
- Red Hat Enterprise Linux AppStream E4S (v.8.6) webkit2gtk3-2.52.3-1.el8_6, webkit2gtk3-devel-2.52.3-1.el8_6, webkit2gtk3-jsc-2.52.3-1.el8_6 +1
- Red Hat Enterprise Linux AppStream TUS (v.8.6) webkit2gtk3-2.52.3-1.el8_6, webkit2gtk3-devel-2.52.3-1.el8_6, webkit2gtk3-jsc-2.52.3-1.el8_6 +1
- RHSA-2026:11814 Released 2026-04-29 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) webkit2gtk3-2.52.3-1.el8_8, webkit2gtk3-devel-2.52.3-1.el8_8, webkit2gtk3-jsc-2.52.3-1.el8_8 +1
- Red Hat Enterprise Linux AppStream TUS (v.8.8) webkit2gtk3-2.52.3-1.el8_8, webkit2gtk3-devel-2.52.3-1.el8_8, webkit2gtk3-jsc-2.52.3-1.el8_8 +1
- RHSA-2026:11329 Released 2026-04-28 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream EUS (v.9.6) webkit2gtk3-2.52.3-1.el9_6, webkit2gtk3-devel-2.52.3-1.el9_6, webkit2gtk3-jsc-2.52.3-1.el9_6 +1
- RHSA-2026:10702 Released 2026-04-27 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.52.3-1.el8_10, webkit2gtk3-devel-2.52.3-1.el8_10, webkit2gtk3-jsc-2.52.3-1.el8_10 +1
- RHSA-2026:9692 Released 2026-04-22 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.52.3-0.el9_7.1, webkit2gtk3-devel-2.52.3-0.el9_7.1, webkit2gtk3-jsc-2.52.3-0.el9_7.1 +1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple macOS 26.4
23 records Highest priority Priority MEDIUM 1 MEDIUM, 22 LOW
Other records, highest priority first
- TI-2026-16688 Apple macOS: A user may be able to elevate privilegesPriority MEDIUM 40
- TI-2026-23036 Heap-based buffer overflow in Apple macOSPriority LOW 39
- TI-2026-23031 Improper access control in Apple macOSPriority LOW 39
- Release ·
Apple iOS and iPadOS 18.7.7, 26.4
16 records Highest priority Priority LOW 16 LOW
Other records, highest priority first
- TI-2026-23066 Information disclosure in Apple iOS and iPadOSPriority LOW 37
- TI-2026-23068 Improper access control in Apple iOS and iPadOSPriority LOW 36
- TI-2026-16721 Protection mechanism failure in Apple SafariPriority LOW 36
Show 1 more group
- Release ·
Apple Safari 26.4
7 records Highest priority Priority LOW 7 LOW
Other records, highest priority first
- TI-2026-16721 Protection mechanism failure in Apple SafariPriority LOW 36
- TI-2026-23046 Out-of-bounds read in Apple SafariPriority LOW 30
- TI-2026-23048 Out-of-bounds read in Apple SafariPriority LOW 21
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:10702 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:19206, RHSA-2026:9692 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2026:16056 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2026:13845 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2026:13845 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:11814 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2026:19535 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:16695 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2026:14659 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:11329 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:16056 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2026:13845 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:11814 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2026:22136 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2026:22136 |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-28871
- 2026-10-03 Alias added: GHSA-m46v-chmw-rw9m
References
More Apple Ipados vulnerabilities
- TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
- TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
- TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
- TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
- TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-28871 · CVE Program
- CVE-2026-28871 · NVD
- FIRST EPSS
- GHSA-m46v-chmw-rw9m · GitHub Advisory Database · CC BY 4.0
- CVE-2026-28871 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences